Example, these are all integers:

-16, -3, 0, 1, 198

(But numbers like ½, 1.1 and 3.5 are not integers)

Confusing

Just to be confusing, some people say that whole numbers can also be negative, so that would make them
exactly the same as integers. And sometimes people say that zero is NOT a whole number. So there you
go, not everyone agrees on a simple thing!

My Standard

I must admit that sometimes I say "negative whole number", but usually I stick to:

Name

Numbers

Examples

Whole Numbers

{ 0, 1, 2, 3, 4, 5, ... }

0, 27, 398, 2345

Counting Numbers

{ 1, 2, 3, 4, 5, ... }

1, 18, 27, 2061

Integers

{ ... -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ... }

-15, 0, 27, 1102

But nobody disagrees on the definition of an integer, so when in doubt say "integer", and
if you only want positive integers, say "positive integers". It is not only accurate, it makes you
sound intelligent. Like this (note: zero is not positive or negative):